*{
    padding: 0;
    margin: 0;
    font-family: 微软雅黑;
}
body{
    overflow-x: hidden;
}
.logo>img{
    width: 320px;
    height: 80px;
}
a{
    text-decoration: none;
    cursor: pointer;
}
.ig{
    height: 80px;
}

ul{
    list-style: none;
}
header .cont{
    width: 1250px;
    margin: 0 auto;
}
.logo{
    float: left;
}
header{
    width: 100%;
    height: 80px;
    background-color:rgba(0,0,0,0.3);
    position: fixed;
    z-index: 1000;
}
.nav{
    float: right;
}
.na{
    width: 230px;
    height: 80px;
    float: left;
   
}
.na>p{
    float: right;
    height: 80px;
    line-height: 80px;
     color: white;
    font-size: 20px;
}
.cont ul li{
    float: left;
}
.nav li a{
    display: inline-block;
    height: 80px;
    line-height: 80px;
    padding: 0 20px;
    font-size: 24px;
    color: white;
}
header ul.nav li.on,
header ul.nav li:hover{
    background-color: #00D1C1;
}